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4mb7

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==Crystal Structure of a viral DNA glycosylase==
==Crystal Structure of a viral DNA glycosylase==
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<StructureSection load='4mb7' size='340' side='right' caption='[[4mb7]], [[Resolution|resolution]] 2.04&Aring;' scene=''>
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<StructureSection load='4mb7' size='340' side='right'caption='[[4mb7]], [[Resolution|resolution]] 2.04&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4mb7]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Apmv Apmv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4MB7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4MB7 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4mb7]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Acanthamoeba_polyphaga_mimivirus Acanthamoeba polyphaga mimivirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4MB7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4MB7 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.04&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Endonuclease VIII (nei) 2, MIMI_L720 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=212035 APMV])</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4mb7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mb7 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4mb7 RCSB], [http://www.ebi.ac.uk/pdbsum/4mb7 PDBsum]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4mb7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mb7 OCA], [https://pdbe.org/4mb7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4mb7 RCSB], [https://www.ebi.ac.uk/pdbsum/4mb7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4mb7 ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/YL720_MIMIV YL720_MIMIV]
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Assault to DNA that leads to oxidative base damage is repaired by the base excision repair (BER) pathway with specialized enzymes called DNA glycosylases catalyzing the first step of this pathway. These glycosylases can be categorized into two families: the HhH superfamily, which includes endonuclease III (or Nth), and the Fpg/Nei family, which comprises formamidopyrimidine DNA glycosylase (or Fpg) and endonuclease VIII (or Nei). In humans there are three Nei-like (NEIL) glycosylases: NEIL1, 2, and 3. Here we present the first crystal structure of a viral ortholog of the human NEIL2/NEIL3 proteins, Mimivirus Nei2 (MvNei2), determined at 2.04A resolution. The C-terminal region of the MvNei2 enzyme comprises two conserved DNA binding motifs: the helix-two-turns-helix (H2TH) motif and a C-H-C-C type zinc-finger similar to that of human NEIL2. The N-terminal region of MvNei2 is most closely related to NEIL3. Like NEIL3, MvNei2 bears a valine at position 2 instead of the usual proline and it lacks two of the three conserved void-filling residues present in other members of the Fpg/Nei family. Mutational analysis of the only conserved void-filling residue methionine 72 to alanine yields an MvNei2 variant with impaired glycosylase activity. Mutation of the adjacent His73 causes the enzyme to be more productive thereby suggesting a plausible role for this residue in the DNA lesion search process.
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Structural investigation of a viral ortholog of human NEIL2/3 DNA glycosylases.,Prakash A, Eckenroth BE, Averill AM, Imamura K, Wallace SS, Doublie S DNA Repair (Amst). 2013 Oct 10. pii: S1568-7864(13)00234-6. doi:, 10.1016/j.dnarep.2013.09.004. PMID:24120312<ref>PMID:24120312</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Apmv]]
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[[Category: Acanthamoeba polyphaga mimivirus]]
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[[Category: Doublie, S]]
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[[Category: Large Structures]]
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[[Category: Eckenroth, B E]]
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[[Category: Doublie S]]
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[[Category: Prakash, A]]
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[[Category: Eckenroth BE]]
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[[Category: Dna glycosylase]]
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[[Category: Prakash A]]
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[[Category: H2th-motif]]
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[[Category: Hydrolase]]
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[[Category: Zinc-finger domain]]
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Current revision

Crystal Structure of a viral DNA glycosylase

PDB ID 4mb7

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